whose shaft do you use?

I guess you're not too close, but at least it's in Florida. But I've had Gary's Driveline in Holly Hill, FL do my driveshafts for decades....from my 10 second 360 W-2 bracket Challenger to my current, heavy low 11 second 360 Dart Sport. Just had one done for another Stock class wagon project. Wide variety of racing experience, including off-road and supercharged mud drags. It helps to use Spicer solid u-joints and a billet yoke on the rear.